Boiler



H. J. KERR July 28,1931.

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BOILER l Filed Sept. l2, 1927 3 Sheets-Sheet 2 FIZ-E;

INVENTOR ATToRm-ajrs July 28, 1931. H. J. KERR 1,816,650

i n BoILER Filed Sept. 12, 1927 3 Sheets-Sheet 3 Patented July 2e, 1931 UNITED STATES PATENT ori-'Ica HOWARD J'. KEER, 0F WESTFKIELD, NEW ABSIGN'OB-TO THE -BABGOCK WILCOX COMPANY, 0F BAYONNE, NEW JERSEY, CORPORATION IVNEW JERSEY BOILEB- Application led September 12, 1927. Serial No. 218,921.

This invention relates Ato a novel and improved construction of a boiler, and more particularly to the construction of a superheater. The invention will be best understood from the following description and the accompanying drawings. In the drawings, I have shown a selected embodiment of my invention, and referring thereo:

Fig. 1 is a longitudinal section through a superheater having my invention embodied therein;

Fig. 2 is a section on theline 2 2 of Fig. 1; g

Fig. 3 .is a section on the line 3 3 Yof Fig. 1;

Fig. 4 is a greatly enlarged fragmentary` section through the outlet tube of a superheater header showing one form which my invention may take, this view being taken.

on the line 4- 4 of Fig. 5;

Fig. 5 is a view taken on the line 5 5 of Fig. 4;

Fig. 6' is a section on the line 6 6 of Fig.

Fig. 7 is a view similar to Fig. 4, but showing a different embodiment of the invention, this view being taken on the line 7 7 of Fig. 8;

Fig. 8 is a View taken on the line 8 8 of Fig. 7. i

Referring now to the drawings in detail, I have shown my invention as embodied in a superheater having two headers 1 and 2. Each header is made up of a plurality of sections, and, in this embodiment, the header l is shown as having the sections 3 and 4, and the header 2 as having the sec-v tions 5 and 6. The steam is admitted to the header section 3, as indicated by the arrow,

.and Hows upwardly through the tubes 7 into the section 5 of the header 2, the tubes 7 forming outlet tubes for the header l, and inlet tubes for the header 2. The steam then passes lengthwise of the header 2, and downwardly through the tubes Sinto the section 4 of the header 1, these tubes being v outlet tubes for the header 2, and inlet tubes for the header 1. The steam then flows lengthwise of the section 4 of the header 1,

J and passes back to the header 2 through the tubes 9, which are outlet tubes' for the' header 1 and inlet tubes for the header 2. This operation is repeatedy as many times as may be desired.

It has beeni found that outlet tubes disposed adjacent an inlet become rapidly burned out, because of the fact that the steam entering the header from the inlet, particularly when at a high velocity, 'will be carried past the adjacent outlet tubes by reason of the high velocity. This difficulty I have overcome by providing means which will causetheinertia of the steam to divertv have shown these ferrules as being placed.

in the five outlet tubes in each row of tubes nearest to the inlet.

varied as found expedient.

It will be seen that each ferrule lits snugly within a tube where it may be retained by any suitable means, as by the frictional engagement between the ferru-le and the tube.v In Figs. 7 and'8 I have shown a ferrule 10. in a tube 7, at the point where this tube leaves the header 1. prises a sleeve 11 iitting snugly within the tube 7, and within the sleeve 11 is received a second sleeve 12 having an inwardly extending apron 13 which is adapted to catch and divert the steam which enters the This ferrule com- It will be understood, `however, that this arrangement may b header, the steam following the path indicreasing size of bore may be. employed be-v cause of the fact that the velocity of the l steam will be' decreased considerably bey Steam. Intersecting the bore -14` .is a Se;

. nd bore.15 parallel to the axis 0f the tug-? and it will be seen that this bore-1,5 is substantially smaller than the bore in the sleeve. 12 of the ferrule 10. It'willof course, be.

I understood that the different forms of feri steam inlet, a plural1ty and ferrules in said tubes rules shown may be used interchangeably, and that the bore in either form may be varied in size as may be founddesirable;` In both forms illustrated, rit that the mouth of each opening is directed at least-in part towards the direction from which the steam flows, or in other words toward the inlet. If so desired, the feryrules may be so disposed that the mouths of the o enings therein be --set at an angle wit the direction of flow of the steam, and by ladjustingthe' degree fof angularity, the amount of vilowf'tl'idx- Qij'fgh thejferrules and through the superheatertubescan be regulated. A ferrule so disposed is shown in dotted lines in Fig. 8. j

From the above itl willbe seen that I have devised means of novel and improved form which will readily divert steam to the outlet tubes disposed transversely of the header. This diversion prevents the-steam from passing the tubes'nearest to the inlet and insures a prope steam between the dierent tubes leaving the header.

I claim:

1. In combination, a header having a steam inlet, a plurahty of outlet tubes disposed at varying distances from said inlet, Projecting into said header, `each of said errules means to divert steam into the correspo ing tubes, the ferrules nearest4 the inlet being constructed and varr '-I to a v ter amount of steam e: I -thosemore remote from the inlet.

2. In combination a header having a of outlet tubes disdlstances from said inlet,

'tudinall tubes, the ferrules in the tubes nearest the inlet having larger openings than those in tubes more remote from the inlet.

4. In combination, a header having a steam inlet and through which steam-from said inlet flows longitudinally of the header, a plurality of outlet tubes extendin transversely from the header and space longithereof, ferrules extending into the hea er from at least some of said tubes, the ferrules in -thetubes nearest the linlet having larger openings than those in tubes more remote from the inlet, and the mouths of said openings being disposed at least in part toward the inlet. a

5. In combination, a header having a steam inlet and through which steam from said inlet flows longitudinally of the header, a plurality of outlet tubes extending transversely from the header and s aced longitudinally thereof, means exten ing:4 into the headeradjacent at least some of 'said tubes Vand forming mouths therefor, said mouths being directed at least in par-t toward the inlet, and the mouths nearest the'inlet being larger than thoseA more remote therefrom. l

.HOWARDL KERR.

r distribution of the at v and means to vert steam into'the outlet tubes adjacentthe inlet, said means being constructed and' arranged to divert prov `gressvely tubes as the smaller amounts of-steam to the inlet increases.

8. In combination, a header .having a steam inlet and through which steam from of the tube from the i in 

